Finding the Third Proportional to 400,109 and 619,334

Step by Step Solution

1. Step 1: Write the proportion equation
   400,109 : 619,334 = 619,334 : x
2. Step 2: Convert to fraction form
   400,109/619,334 = 619,334/x
3. Step 3: Cross multiply
   400,109x = 619,334 × 619,334
4. Step 4: Simplify right side
   400,109x = 383,574,603,556
5. Step 5: Solve for x
   x = 383,574,603,556/400,109
6. Step 6: Final answer
   x = 958,675.27